Patent DE-102004037542-A1 (DE)
Title: Method, useful to protect metallic surface with corrosion inhibitor composition coating comprises applying coating on metallic surface, where the components comprising: deposit substance; and further components and/or matrix substance
Inventor: STRATMANN MARTIN
IPC: C09D5/08
Filed: 2004-08-03
Abstract: Method for the protection of metallic surface (A) with a coating (A1) of corrosion inhibitor composition, comprises applying (A1) on (A), where a component optionally at least partially in a matrix comprising: at least a deposit substance (a) comprising incorporating anions by an oxidation reaction and releasing at least a part of anions for a potential variation; and optionally at least a further components and/or matrix substance. Method for the protection of metallic surface (A) with a coating (A1) of corrosion inhibitor composition, that after providing, optionally drying and hardening, comprises applying (A1) on (A), that as a component optionally at least partially in a matrix comprising: (a) at least deposit substance and at least a conductive polymer, comprising (1) anions incorporated by an oxidation reaction as doped ion and (2) releasing at least a part of anions for a potential variation (reduction), where at least a type of anions is suitable to inhibit an anodic and/or cathodic part reaction of the corrosion and optionally also to act as coupling agent, where the anions respectively exhibits ionic radius, that it is non- or not substantially- impaired the migration through the deposit substances and optionally through at least a further component e.g. in a matrix of the coating, where at least a type of anion are mobile in water, at least an another polar solvent and/or also in at least non polar solvent containing mixture, where the release of anions from at least a deposit substance does not and/or only dependent over a deprotonation reaction, but predominantly and/or completely takes place over a reduction reaction, and where at least a educt for the preparation of the deposit substance is selected, that the oxidation potential is less or same to the decomposition potential of the water and/or at least an another polar solvents in the mixture; and (b) optionally at least a further component and/or at least a matrix substance, that at least a deposit substance serves at least partially as matrix and at least an organic polymer/copolymer, where at least a deposit substance present in the undistributed areas of the coating are at least partially oxidized and/or at least partially doped by the anions and at least the deposit substance in the disturbed areas of the at least partially reduced coating and/or devoid at least partially of doping anions, where the coating is adjusted by the contained components or their contents, that an essential content of corrosion protecting anion and optionally also of coupling agent anion is released from at least a deposit substance with a potential reduction between the redox potential at least a deposit substance in undistributed condition to the corrosion potential of the metallic surface at an defect like e.g. at an scratch or at a pollution at the boundary area metal/coating, so that it acts at least partially prematurely or prematurely against the generation and/or progression of the delamination, before the strong delamination enters at the boundary area metal/coating. Independent claims are also included for: (1) a metallic substrate with at least a coating, which is protected; and (2) use of respectively at least a complex fluoride, a titanate and/or a zirconate as an anion for at least a conductive polymer.